BRITNEY SPEARS

For the Teen Choice Awards, brought out the big guns: a sexy silver mini (showing off major cleavage) and a colorful new do, complete with blue, green and purple dip-dyed ends. Perfect for a Las Vegas residency!

KATIE HOLMES

The debuted a chic, shoulder-grazing bob on the set of her new film, All We Had, and we’re still talking about it. The curly do is a surprise for the star, who openly loves her hair long. “I like the versatility,” she told Yahoo Style. “I like being able to put it into a ponytail. I’m a ponytail girl.”

KATHERINE HEIGL

Blonde bombshell alert! The showed off her bright platinum hue, which is the result of her secret new role, on Insta. And in case you were wondering, yes, her husband, Josh Kelley, approves; “…the good news is, @joshbkelley is vibing it…;),” she captioned the snap.

MAX GREENFIELD

In case you haven’t noticed, everybody’s going platinum these days. The actor recently boldly went bright blond for his new role on American Horror Story: Hotel. Now, who’s ready to catch his new hue on screen this October?

BRIAN AUSTIN GREEN

We should have realized there was trouble in paradise for the former 90210 star and Megan Fox when the actor recently stepped out with a totally shorn scalp. We’re officially dubbing the shaved style his “breakup buzz.”

ASHLEY TISDALE

The former blonde ditched her signature shade for a summer-inspired strawberry “bronde, with the help of celeb hair stylist Kristin Ess. Days after the new do debut, the actress shared the behind-the-scenes deets of the new color on her new lifestyle blog, .

VANESSA HUDGENS

The mermaid hair is back for ! Fresh off her stint in Gigi, the actress added major inches to her chic summer bob – practically overnight. Now, her super-long, wavy extensions fall to her belly button!

RUMER WILLIS

“Once you chop, you can’t stop” must be hair motto these days. Earlier this year, the former Dancing With the Stars champion ditched her long extensions for a chic shoulder-grazing bob. She then cut a piecey pixie with a long bang before returning to long all over again.

DEBBY RYAN

How does rockstar Debby Ryan prep for her big summer tour? With a pink-and-green two-toned dye job, of course! Celeb hair stylist Kristin Ess was the mastermind behind the colorful concoction, helping the star double up on one of summer’s biggest hair trends: pastels!

KATE MARA

Short tresses aren’t new for the actress, but she’s never made it to pixie territory – until now! Kate debuted a chic, asymmetrical chopped do – cut by her hairstylist Mara Roszak – before hitting the red carpet for a Max Mara event.

BRITNEY SPEARS

EMILIA CLARKE

While Khaleesi continues to rock her long, blonde tresses in Game of Thrones, Emilia Clarke’s got other (hair-related) plans. The actress left behind her long, wavy strands for a short, chic bob once the show wrapped its latest season. “New day new ‘do En route to #terminatorgenisys world premiere! Thank you @apolillo for bringing sexy back ,” she captioned the Insta snapshot showing off her sleek style.

LAVERNE COX

While the rest of us welcomed the new season of OITNB with a weekend of Netflix marathoning, Laverne Cox got bangs to celebrate! They weren’t permanent, but we liked the quick glimpse at a potential tress switch-up.

MINDY KALING

The Mindy Project creator and (our own perpetual style crush) ditched her long, wavy mane for a super-chic, chin-length bob and then shared the “short hair, don’t care” style on Instagram (she then followed it up with “short hair, do care!”).

MADONNA

is the queen of reinvention, so we weren’t shocked to see her go pink, but after seeing how much fun she’s having with her ombré pink dip-dyed strands, we’re wondering why the singer didn’t make the mane change sooner!

JULIANNE HOUGH

The Dancing With the Stars shocked us all when she went pastel pink (for a good cause!), but it seems the unicorn-inspired hue was only temporary, as she’s back to her (very) blonde roots. But since she’s mentioned she loves experimenting with her do, who knows what she’ll do next?

JUSTIN BIEBER

After hiding his most recent haircut for weeks, has finally revealed his latest style with fans – and it’s not as crazy as we’d imagined. Sporting a new asymmetrical cut (perhaps for his role in Zoolander 2?), the singer has simply cleaned up his sides leaving his mini-ponytail days behind.

HILARY DUFF

We can’t keep up with all of hair changes! After ditching her signature blonde tresses for a cool blueish-green hue she dubbed her “mermaid hair,” she quickly moved on to a My Little Pony-inspired bright pink color. And now, the star is sporting grayish-blue strands. At this point, it’s only a matter of time until she’s tried out all of the colors of the rainbow – on her head!

CHRISTINA AGUILERA

After a brief stint as a brunette for her role of Nashville, the is back to blonde. But this time she went short! The Voice coach ditched her waist-length platinum extensions for a shoulder-grazing lob just in time for summer.

ADAM LEVINE

Christina isn’t the only member of The Voice gang to rock a new do. The Maroon 5 debuted his freshly shorn locks during a recent episode of the show, which left fans in hysterics on Twitter. And his new cut didn’t happen at a salon – it’s brought you to by his wife, supermodel Behati Prinsloo!

LENA DUNHAM

The Girls creator isn’t afraid of changing up her look every now and then (remember her green hair?), but her latest cut is a biggie – she debuted a piecey pixie cut on Late Night With Seth Meyers last week.

VANESSA HUDGENS

We’re used to all of the Gigi star’s style switch-ups (like her red wash and recent bangs), so when she announced she was getting a shorter style for spring, we shouldn’t have been so surprised she’d follow through – a day later.

CHRISTINA HENDRICKS

Hollywood’s most famous redhead and latest brand ambassador for Clairol, ditched her fiery tresses for a strawberry blonde shade. “The color has this new energy about it, Hendricks told PEOPLE exclusively. It s fun. It may not seem like a huge deal, but I think every woman knows that when you color your hair it changes your vibe.”

CHRISTINA AGUILERA

With a brand-new role on Nashville comes a fresh, new do. Playing a country singer, the got a dark makeover, embracing life as a brunette and leaving behind her well-known platinum tresses (temporarily, of course!).

ROSE BYRNE

GUILIANA RANCIC

The TV personality switched up her hue less than a month ago, but must have been bit by the haircut bug, as she’s traded her shade for a new cut, color and bangs. “I always know it s time for a change when I look in the mirror and I m not excited any more, she told PEOPLE. I had that feeling recently where I just got used to seeing my blonde hair every day and there wasn t anything exciting about it.”

JUSTIN BIEBER

has returned to his roots – his dirty blond roots, that is. After sporting platinum locks for a few months, the singer is now back to his original hair shade – though he’s trying a new wet-look to go with.

OLGA KURYLENKO

The actress surprised us all when she said goodbye to her chocolate brown hair and switched to cinnamon-red. While Kurylenko may have made a major color change, she opted to keep her fringe, textured layers and long length.

NICOLE RICHIE

Last year, the went from purple to midnight blue, but has since lightened up her locks with a brand-new bright pink hue. During the same salon visit, she also switched up her style, losing some length and adding some bangs, for a flirty (but yes, pink) bob.

SELENA GOMEZ

We all know the is close friends with , but we never thought she d channel her good Friend when deciding on a new do. The star s most recent cut, a face-framing, textured, shaggy style looks awfully similar to ‘the Rachel’.

BROOKLYN DECKER

While most of us have to seriously contemplate a big hair decision (like losing over a foot of hair in one salon session), Brooklyn’s choice to chop was made for her. "We were deciding between coloring it red or chopping it I had it in a ponytail, and while I was waiting to get my hair washed for the color [my stylist] just walked up behind me and chopped it off!"

LUCY HALE

The Pretty Little Liars star first chopped her hair in November of last year, opting for a honey blonde ombré lob. But it seems as if the star was bitten by the haircut bug because she recently lost a few more inches, officially joining the bob bandwagon.

SELENA GOMEZ

“Tried my best @sukiwaterhouse,” captioned an Instagram of her new fringe, which took editors here by surprise considering she hasn’t had a major hair change in a while (and even then, it was just extensions).

KERRY WASHINGTON

Not usually one to experiment with hair color, lightened up her strands from mid-length to tips at the Emmys. We’re anxious to see if it was just to match her edgy Prada dress or if the shade is here to stay.